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发明授权
CN101743174B 瓶盖 有权

瓶盖
摘要：
一种瓶盖，该瓶盖(1)具有：盖部(11)，具有封堵瓶子(2)的口部(21)的顶面部(111)；筒状的容置部(12)，插入在瓶子(2)的口部(21)内，一个端部固定在盖部(11)的顶面部(111)；外筒部(13)，其内部插入容置部(12)，容置部(12)的另一个端部从该外筒部(13)的一个端部突出，并且另一个端部与盖部(11)螺合。容置部(12)具有：筒状的容置部主体(121)，位于与盖部(11)的顶面部(111)相反一侧的端面形成开口；底盖部(122)，以能够装卸的方式嵌入于容置部主体(121)的开口中，与外筒部(13)的一个端部相向。关于瓶盖(1)，向开启方向旋转盖部(11)而驱动容置部主体(121)，通过外筒部(13)的一个端部使底盖部(122)从容置部主体(121)脱落。盖部(11)的顶面部(111)的波长为280nm～800nm的光的透射率为0.06％以下，优选为0.01％以下。
摘要（英）：

Provided is a bottle cap (1) comprising a cover portion (11) which has a top face portion (111) for closing the mouth portion (21) of a bottle (2), a cylindrical containing portion (12) which is inserted into the mouth portion (21) of the bottle (2) and has its one end portion fixed to the top face portion (111) of the cover portion (11), and an outer cylinder portion (13) in which the containingportion (12) is contained and which has one end portion from which the other end portion of the containing portion (12) is protruded and the other end portion onto which the cover portion (11) is threaded. The containing portion (12) includes a cylindrical container body (121) opened at its end portion positioned on the opposite side of the top face portion (111) of the cover portion (11), and a bottom cover portion (122) removably fitted in the opening of the container body (121) and opposed to the one end portion of the outer cylinder portion (13). The bottle cap (1) advances the cover portion (11) threadedly in an opening direction to drive the container body (121) thereby to release the bottom cover portion (122) from the container body (121) at the one end portion of the outer cylinder portion (13). The top face portion (111) of the cover portion (11) has a transmittance of 0.06% or less, preferably 0.01 % or less for a light having a wavelength of 280 nm - 800 nm.

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